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46 posts


# 20954 10-Apr-2008 22:53
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P4 3GHz, Win XP MCE
8500GT GPU with H.264 h/w acceleration running
Cyberlink H.264/AVC Decoder (Azurewave) (from Twinhan Digital TV package)
Using VMR 9 renderer

Everything is working well. CPU is about 20% or less.
However, getting jitter which is most noticeable during panning. VMR9 renderer properties in DVBViewer is showing jitter of about 9 on Freeview HD demo channel (720p). Is better on TV3 - jitter is about 3 (1080i). Don't seem to be dropping frames.

Also showing frame rates of about 37 on 720p channels. What is that about??

I've read that there may be a problem with the Purevideo engine on 8500 & up Nvidia GPU's.

Do others have this problem? Is this an VMR 9 issue? What jitter readings are others getting?

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46 posts


  # 122978 11-Apr-2008 23:26
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Anyone else experienced this problem with XP and VMR 9? I get a great picture except that when the picture pans or there is rapid onscreen movement, the movement is jerky.

I've read about people having similar problems with Nvidia 8XXX GPU's.


Not sure whether I need to:
(i) Upgrade to Vista and EVR
(ii) Try a different codec
(iii) Ditch the 8500GT GPU

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